CN110842290A - A multi-step PCD chip breaking reamer - Google Patents

Abstract

The invention relates to a multi-step PCD chip breaking reamer which is used for processing soft aluminum material products and comprises a reamer handle and a reamer body. The cutter body and the cutter handle are coaxially arranged integrally, and the cutter body comprises a fourth cutter body, a third cutter body, a second cutter body and a first cutter body which are sequentially arranged from one end of the cutter handle to a far position and have gradually reduced outer diameters; the outer edge of the fourth cutter body is asymmetrically provided with at least two first blades, the outer edge of the third cutter body is asymmetrically provided with at least two third blades, the outer edge of the second cutter body is asymmetrically provided with at least two second blades, and the outer edge of the first cutter body is provided with a plurality of first blades; the second blade and the third blade are positioned on the same plane, and the plane where the fourth blade is positioned is vertical to the plane where the third blade or the second blade is positioned. In the machining process, the cut broken chips can smoothly move towards the direction of the cutter handle in enough space and are arranged outside the hole, so that the broken chips are prevented from being wound on each blade or each cutter body.

Description

A multi-step PCD chip breaking reamer

technical field

The invention relates to the field of reamer, in particular to a multi-step PCD chip breaking reamer.

Background technique

A reamer is a rotary tool with one or more teeth for removing a thin layer of metal on the surface of a machined hole. The reamer is used to ream the drilled (or reamed) holes on the workpiece, mainly to improve the machining accuracy of the hole and reduce the roughness of its surface. It is a tool for finishing and semi-finishing of holes. , the machining allowance is generally small.

The multi-step reamer of the prior art, according to the usual processing technology, will present aluminum shavings in the shape of hair when processing soft aluminum products, which will be continuously and easily wrapped until the end face of the shank is in the shape of a bird's nest, which will jam and break the tool. Being stuck is easy to scratch the inner hole wall, which affects the accuracy of the product.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-step PCD chip breaking reamer which is beneficial to smooth chip removal.

To achieve the above object, the technical scheme adopted in the present invention is:

The present invention provides a multi-step PCD chip-breaking reamer for processing aluminum material products, which is characterized by comprising:

handle;

A cutter body, the cutter body and the cutter handle are integrally arranged coaxially, and the cutter body includes a fourth cutter body, a third cutter body, a third cutter body, a fourth cutter body, a third cutter body, a Two cutter bodies and a first cutter body; the outer edge of the fourth cutter body is asymmetrically provided with two fourth blades, the outer edge of the third cutter body is asymmetrically provided with two third blades, and the third cutter body is asymmetrically provided with two third blades. The outer edges of the two cutter bodies are asymmetrically provided with two second blades, and the outer edges of the first cutter bodies are provided with a plurality of first blades; the second blades and the third blades are in a plane, the The plane where the fourth blade is located is perpendicular to the plane where the third blade or the second blade is located.

Further, the second cutter body, the third cutter body and the fourth cutter body are all flat.

Further, the fourth blade has two asymmetrically distributed on the outer edge of the fourth blade body and extends beyond the distal end surface thereof, and each of the fourth blades has a second chamfer, and the fourth blade is provided with a second chamfer. The angle between the inclined plane of the second chamfer and the axis line is 55~65°.

Further, the third blade has two and is asymmetrically distributed on the outer edge of the third blade body and extends beyond the distal end surface thereof.

Further, the second blade has two asymmetrically distributed on the outer edge of the second blade body and extends beyond the distal end surface thereof.

Further, the first blades have four and are distributed on the outer edge of the first blade body and extend beyond its free end, wherein two of the first blades are on the second blade body or the third blade body The two blades are in the same plane, and the other two first blades are in the same plane as the two fourth blades; the rake face of the first blade has a first chamfer, and the inclined surface of the first chamfer is in the same plane. The included angle with the end face of the first blade is 13-15°.

Further, the cutter body further includes at least one chip removal groove, the chip removal groove is bent and extended from the peripheral surface of the first cutter body to the peripheral surface of the fourth cutter body, and the chip removal groove is close to the A first blade, a second blade, a third blade and a fourth blade.

Further, the chip flutes have four lanes.

Further, it also includes an inner cooling hole, and the inner cooling hole includes an inner cooling main hole extending from the free end of the shank to the first cutter body in sequence, and an inner cooling branch hole communicating with the inner cooling main hole. and the inner cooling branch holes respectively extend and open near the first blade, the second blade, the third blade and the fourth blade.

Further, the fourth cutter body smoothly transitions to the cutter handle to form a transition surface, the included angle between the transition surface and the axis line is 40-45°, and the cutter handle is cylindrical.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

In the multi-step PCD chip-breaking reamer of the present invention, the second blade on the second blade body and the third blade on the third blade body are on the same plane, and the fourth blade on the fourth blade body is on the same plane. It is perpendicular to the plane where the second blade on the second blade body and the third blade on the third blade body are located; from the above, it can be seen that the blade is not in one direction, and the cut chips are not in one direction, and there can be enough The space moves smoothly towards the tool handle, so it is better for chip removal;

At the same time, the first blade, the second blade, the third blade and the fourth blade are all designed asymmetrically, so that during the machining process, the cut chips can have enough space to smoothly move towards the tool holder and be discharged. Outside the hole, avoid chip breaker wrapping around each insert or each cutter body.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a schematic diagram of a multi-step PCD chip-breaking reamer according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a multi-step PCD chip breaking reamer turned 90° shown in Fig. 1;

FIG. 3 is a left side view of a multi-step PCD chip breaking reamer shown in FIG. 1 .

Among them, the reference numerals are described as follows:

1. Knife handle;

2. Blade body; 21. First blade body; 22, Second blade body; 23, Third blade body; 24, Fourth blade body; 25, First blade; 26, Second blade; 27, Third blade ; 28, the fourth blade; 29, the chip flute; 40, the first chamfer; 41, the second chamfer.

3. Internal cooling hole; 31. Internal cooling main hole.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in FIG. 1 to FIG. 3 , a multi-step PCD chip breaking reamer described in this embodiment is used for processing soft aluminum material products, including a tool holder 1 and a tool body 2 .

The cutter body 2 and the cutter handle 1 are integrally arranged coaxially, and the cutter body 2 includes a fourth cutter body 24 and a third cutter body which are sequentially arranged from one end of the cutter handle 1 to the far side and whose outer diameters gradually decrease 23. The second cutter body 22 and the first cutter body 21; the outer edge of the fourth cutter body 24 is asymmetrically provided with two fourth blades 28, and the outer edge of the third cutter body 23 is asymmetrically provided with two There are three third blades 27, the outer edge of the second blade body 22 is asymmetrically provided with two second blades 26, and the outer edge of the first blade body 21 is provided with a plurality of first blades 25; The blade 26 and the third blade 27 are located on the same plane, and the plane where the fourth blade 28 is located is perpendicular to the plane where the third blade 27 or the second blade 26 is located.

The second cutter body 22, the third cutter body 23 and the fourth cutter body 24 are all flat; the second cutter body 22 and the third cutter body 23 are all connected with the fourth cutter body Body 24 is perpendicular.

The fourth blade 28 has two asymmetrically distributed on the outer edge of the fourth blade body 24 and extends beyond its distal end surface, the fourth blade 28 has a second chamfer 41, the The angle between the inclined plane of the second chamfer 41 and the axis is 55° to 65°, and in this embodiment, it is specifically 60°; and since the fourth hole needs to be chamfered, the fourth blade 28 is provided with a second chamfer. Corner 41 facilitates chamfering.

The third blade 27 has two and is asymmetrically distributed on the outer edge of the third blade body 23 and extends beyond its distal end face.

The second blade 26 has two and is asymmetrically distributed on the outer edge of the second blade body 22 and extends beyond its distal face.

The first blades 25 have four and are distributed on the outer edge of the first blade body 21 and extend beyond its free end, wherein two of the first blades 25 and the two second blades on the second blade body 22 are. The second blades 26 or the two third blades 26 on the third blade body 23 are in the same plane, and the other two first blades 25 and the two fourth blades 28 are in the same plane; the front blades of the first blades 25 Each surface has a first chamfer 40, and the angle between the slope of the first chamfer 40 and the end face of the first blade 25 is 13° to 15°, specifically 15°; the first chamfer 40 plays a transitional role , to avoid the easily broken edge caused by the first blade 25 being too sharp.

The cutter body further includes at least one chip removal groove 29, the chip removal groove 29 is curved and extends from the outer peripheral surface of the first cutter body 21 to the outer peripheral surface of the fourth cutter body 24, and the chip removal groove 29 is close to the outer peripheral surface of the fourth cutter body 24. The first blade 25 , the second blade 26 , the third blade 27 and the fourth blade 28 . The chip flutes 29 have four lanes. The aluminum chips cut by the first blade 25 , the second blade 26 , the third blade 27 and the fourth blade 28 can be removed toward the tool holder 1 and out of the hole.

It also includes an inner cooling hole 3, and the inner cooling hole 3 includes an inner cooling main hole 31 extending from the free end of the tool handle 1 to the first cutter body 21 in sequence, and an inner cooling main hole 31 communicating with the inner cooling main hole 31. Cooling holes, the inner cooling holes respectively extend and open near the first blade 25 , the second blade 26 , the third blade 27 and the fourth blade 28 . In order to cool or lubricate the first blade 25, the second blade 26, the third blade 27 and the third blade 27, it has internal cooling holes 3, which has better chip removal and cooling effect, and is conducive to faster cutting speed. promote.

The fourth cutter body 24 smoothly transitions to the handle 1 to form a transition surface, and the included angle between the transition surface and the axis is 40° to 45°, specifically 45°, to ensure its aesthetics, and all the The handle 1 is cylindrical.

The outer diameter of the first cutter body 21 is 4.5-6.5 cm and the length is 10-14 cm, wherein the outer diameter of the first cutter body 21 in this embodiment is 5.6 cm and the length is 11.8 cm.

The outer diameter of the second cutter body 22 is 7-9 cm, and the length is 15.5-19.5 cm, wherein in this embodiment, the outer diameter of the second cutter body 22 is 5.6 cm and the length is 11.8 cm.

The outer diameter of the third cutter body 23 is 11-15 m and the length is 11-13 cm, wherein the outer diameter of the third cutter body 23 in this embodiment is 12.98 cm and the length is 10.95 cm.

The outer diameter of the fourth cutter body 24 is 16-20 cm and the length is 28.5-32.5 cm, wherein the outer diameter of the fourth cutter body 24 in this embodiment is 18 cm and the length is 33.55 cm.

This embodiment is used to process stepped holes with four steps, the first blade 25 on the first cutter body 21 is used for reaming the first hole, and the second blade 26 on the second cutter body 22 is used for reaming the first hole. Two holes are reamed, the third blade 27 on the third cutter body 23 is used for reaming the third hole, and the fourth blade 28 on the fourth cutter body 24 is used for reaming the fourth hole .

In this embodiment, the second cutter body 22 and the third cutter body 23 in this embodiment are on a plane, and the second cutter body 22 and the third cutter body 23 are both perpendicular to the fourth cutter body 24 And the plane where the second blade 26 on the second blade body 22 is located is in the same plane as the plane at which the third blade 27 on the third blade body 23 is located, and the plane where the fourth blade 28 on the fourth blade body 24 is located and The plane of the second blade 26 on the second blade body 22 or the third blade 27 on the third blade body 23 is perpendicular to the plane, and two of the first blades 25 and the two second blades of the second blade body 22 The two third blades 27 on the blade 26 or the third blade body 23 are in the same plane, and the other two first blades 25 and the planes where the two fourth blades 28 are located are in the same plane; it can be seen from the above that the blade body is not in the same plane In a plane, the blade is not in one direction, and the chip breaking is not in one direction, and there is enough space to smoothly move towards the tool handle, so it is better for chip removal;

At the same time, the first blade 25, the second blade 26, the third blade 27 and the fourth blade 28 all adopt an asymmetric design, which not only reduces the cutting resistance forcefully, but also enables the chip breaking during the machining process. There is enough space to smoothly move towards the tool holder 1 and discharge it out of the hole to avoid the broken chips from entangling on each blade or each tool body;

Further, the chip flutes 29 are arranged in an elongated shape and are close to the first blade 25 , the second blade 26 , the third blade 27 and the fourth blade 28 , so that the first blade 25 , the second blade 26 and the third blade The aluminum chips cut by 27 and the fourth insert 28 are removed along the chip flute 29 toward the tool holder 1 and out of the hole.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the scope of protection of the present invention with this. Equivalent changes or modifications made in the spirit and spirit should all be included within the protection scope of the present invention.

Claims (10)

1. A multi-step PCD chip breaking reamer for processing aluminum material products, comprising:

a knife handle;

the cutter body and the cutter handle are integrally and coaxially arranged, and the cutter body comprises a fourth cutter body, a third cutter body, a second cutter body and a first cutter body which are sequentially arranged from one end of the cutter handle to a far position and have gradually reduced outer diameters; the outer edge of the fourth cutter body is asymmetrically provided with two fourth blades, the outer edge of the third cutter body is asymmetrically provided with two third blades, the outer edge of the second cutter body is asymmetrically provided with two second blades, and the outer edge of the first cutter body is provided with a plurality of first blades; the second blade and the third blade are positioned on the same plane, and the plane where the fourth blade is positioned is vertical to the plane where the third blade or the second blade is positioned.

2. The multi-step PCD chip breaking reamer of claim 1, wherein: the second cutter body, the third cutter body and the fourth cutter body are all flat.

3. The multi-step PCD chip breaking reamer of claim 2, wherein: the fourth blades are asymmetrically distributed on the outer edge of the fourth cutter body and extend to a position beyond the distal end face of the fourth cutter body, the fourth blades are provided with second chamfers, and the included angle between the inclined faces of the second chamfers and the axial lead is 55-65 degrees.

4. The multi-step PCD chip breaking reamer of claim 3, wherein: the third blades are asymmetrically distributed on the outer edge of the third cutter body and extend to exceed the distal end surface of the third cutter body.

5. The multi-step PCD chip breaking reamer of claim 4, wherein: the second blades are asymmetrically distributed on the outer edge of the second cutter body and extend to exceed the distal end surface of the second cutter body.

6. The multi-step PCD chip breaking reamer of claim 5, wherein: the first blades are four and distributed on the outer edge of the first cutter body and extend to the free end of the first blades, two first blades and two second blades on the second cutter body or two third blades on the third cutter body are positioned on the same plane, and the other two first blades and two fourth blades are positioned on the same plane; the rake face of first blade all has first chamfer, the inclined plane of first chamfer with the contained angle of first blade terminal surface is 13~ 15.

7. The multi-step PCD chip breaking reamer of claim 6, wherein: the cutter body still includes one at least chip groove, the chip groove certainly first cutter body periphery face crooked extend to on the fourth cutter body periphery face, the chip groove is close to first blade, second blade, third blade and fourth blade.

8. The multi-step PCD chip breaking reamer of claim 7, wherein: the chip groove is provided with four channels.

9. The multi-step PCD chip breaking reamer of claim 1, wherein: still include interior cold hole, interior cold hole include certainly handle of a knife free end to first blade extends in proper order interior cold king-hole, with interior cold king-hole that interior cold king-hole communicates, interior cold king-hole extends respectively and the opening in first blade second blade third blade with near the fourth blade.

10. The multi-step PCD chip breaking reamer of claim 1, wherein: the fourth cutter body to the handle of a knife is rounding off and forms the transition face, the contained angle of transition face and axial lead is 40~45, just the handle of a knife is cylindrical.

Images